Anorexia Nervosa is currently known to affect approximately 0.9% of the population. The last research survey to explore this dates from 2012 and therefore, it may be safe to assume that the prevalence has risen in the past decade.
Anorexia is characterized in the DSM V as a refusal to maintain a normal body weight through dietary restriction and compensatory behaviors.
Please note that normal body weight does not mean a weight that meets Body Mass Index (BMI) standards. Instead, it means efforts to maintain a weight that is not biologically appropriate and leads to medical symptoms of starvation.
These efforts include:
- Energy restriction
- Over exercise
- Purging or laxative abuse